Recovery of lithium, cobalt and nickel from the spent NMC Li-ion battery by reduction roasting, selective leaching and precipitation
Copyright © 2025 Elsevier Ltd. All rights reserved.
| Veröffentlicht in: | Waste management (New York, N.Y.). - 1999. - 200(2025) vom: 01. Mai, Seite 114749 |
|---|---|
| 1. Verfasser: | |
| Weitere Verfasser: | |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2025
|
| Zugriff auf das übergeordnete Werk: | Waste management (New York, N.Y.) |
| Schlagworte: | Journal Article Leaching Li-ion battery Precipitation Recovery Reductive roasting Cobalt 3G0H8C9362 Lithium 9FN79X2M3F mehr... |
| Zusammenfassung: | Copyright © 2025 Elsevier Ltd. All rights reserved. Valuable elements from the NMC Li-ion battery black mass were recovered by reduction roasting and selective leaching/precipitation. Active materials were separated from the Al/Cu collector foils by thermal treatment and then subjected to reduction roasting by carbon anode in the temperature range of 600-900 °C for 2 h. The progress of the reactions was studied via XRD, TGA-DTA, and thermodynamic modeling. Ni/Co reduction was completed at T ≥ 800 °C and transformation of Li2CO3 to Li2O occurred at 900 °C. Water leaching was employed to separate lithium from roasted products and about 93 % of Li was selectively extracted from the roasted product. Pure Li2CO3 was precipitated from the solution by CO2 injection without purification or the addition of pH modifiers. Mn was then selectively leached from the Li-depleted powder by citric acid. The effect of citric acid concentration, temperature, and time on the leaching efficiency of Mn was studied. About 95 % Mn was removed from the powder at a citric acid concentration of 0.15 M, T = 75 °C, time = 200 min, and S/L = 20 g/L. The activation energy of the Mn dissolution was measured as 15.5 kJ/mol suggesting a diffusional controlled mechanism. A Ni-Co alloy powder was obtained as the final leaching residue. This study provides an effective and practical approach for recycling valuable metals from spent NMC Li-ion batteries |
|---|---|
| Beschreibung: | Date Completed 16.04.2025 Date Revised 16.04.2025 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1879-2456 |
| DOI: | 10.1016/j.wasman.2025.114749 |